JPS59181175A - Head speed measuring instrument of golf club - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a measuring device for measuring the speed of a golf club head when it is swung.

Conventionally, methods for determining the speed of the club head when swinging a golf club include a head speed detection device that uses electronic technology and is placed in the impact zone of the club head, or a device that detects the speed of a club head when a simulated golf ball is hit with the club. A means for displaying the strength of the impact on the ball, or
A known method is to use the wind pressure when swinging a club to make the club sound a small whistle. The above conventional methods for determining club head speed have problems such as the hassle of having to install the club head speed measurement device on the ground or the floor, the inconvenience of carrying it around, the cost, or the use of a small whistle. Auditory head speed,
This comes with the inconvenience of having to make a judgment.

Therefore, an object of the present invention is to provide a simple head speed measuring device that eliminates the drawbacks of conventional head speed measuring devices.

The head speed measuring device according to the present invention is detachable from the head stop of a club shaft, and moves a moving body using centrifugal force generated when the club is swung, and determines the speed of the club head by the amount of movement. This is how it was done. When a club is swung, a moving object that is moved by centrifugal force is subjected to resistance in the opposite direction to the direction of centrifugal force. The movable body is provided on a mounting frame attached to the club shaft so as to be able to slide in the axial direction of the shaft. The amount of movement of the movable body is determined by the centrifugal force when the club is swung, the mass of the movable body, the anti-centrifugal force resistance described above, and the dark friction resistance present in the support portion of the movable body. Since the mass of the moving body, the anti-centrifugal force resistance, and the above-mentioned frictional resistance can be considered to be constant in practice, the amount of movement of the moving body is determined by the centrifugal force,
In other words, it changes depending on the swing speed of the club.

Therefore, by knowing the maximum amount of movement of the moving object, the head speed of the person can be determined or measured.

The head speed measuring device (of the present invention) has a moving object display section, and this display section displays the maximum amount of movement of the moving object6.As a method for displaying the amount of movement of the moving object, the moving object itself A method of stopping the moving body at a position, a method of leaving a slider separate from the moving body pushed and moved by the moving body at the moving position of the moving body, or a means of detecting the moving body magnetically or electrically. Can be adopted.

As a means for applying resistance to the moving body in a direction that opposes the centrifugal force tc acting on it, a repulsive force due to a spring, a repulsive force due to magnetism, or a frictional force due to a friction member placed in contact with the moving body is used.

According to the present invention, the maximum speed of the club head can be visually confirmed, the head speed measuring device can be easily carried with the club at all times, and it can be easily handled anywhere where the club can be swung. It is extremely convenient because it can be used for various purposes, and it is also useful for practicing swinging a club to improve club head speed.

Hereinafter, the present invention will be explained with reference to illustrated embodiments. The head speed measuring device 1 is attached to the club shirt l-2 near the head, as schematically shown in FIG. As shown in FIG. 2, the measuring instrument 1 includes a mounting frame 3 having legs 5a for elastically holding a shaft 2 and elastically fixing the measuring instrument to the shaft 2, and this mounting frame 6. A guide section 4 consisting of a rod with both ends fixed to a pair of ears 3b and 3c provided at both ends of the guide section 4, and a movable body 5 loosely inserted into this guide section 4.
A spring 6 is interposed between the movable body 5 and one ear 3C and pushes the movable body 5 toward the other ear 3b, that is, the ear on the grip side. It is composed of a locking piece 7.

As shown in FIG. 6, the locking piece 7 is swingably attached within the sliding slot 9 of the movable body 5 by a thin pin 8 extending in a direction perpendicular to the guide portion 4.

The tail end 7a of the locking piece 7 protrudes to the outside of the movable body 5.
A relatively weak spring 10 is interposed between the tail end 7a and the movable body 5 to rotate the locking piece 7 clockwise in FIG. The distal end 7b of the locking piece 7 is lightly pressed against the guide portion 4 due to the rotatability of the locking piece 7 due to the above-mentioned spring 10.

Perpendicular line A drawn from the bottle 8 to the guide part 4, and the line between the bottle 8 and the tip 7
Angle θ between b and %iB connecting the contact part with the guide part 4
It is desirable to make it as small as possible to ensure the locking effect.

Now, attach mounting frame 3 to the club shaft! When the player swings the club, the moving body 5 moves against the centrifugal force and the pushing force of the spring 6. Although the moving body 5 is pushed back by the returning elasticity of the spring 5, the tip 7b of the locking piece 7 or the guide portion 4V (gets stuck, so it stays at the moving position and remains in the unsteady state). Rel.The amount of movement of the moving object 5 is
Since it is determined by the magnitude of the centrifugal force that is proportional to the swing practice of the club, the amount of movement of the moving body 5 can be checked by checking the scale S marked on the mounting frame 6. You can know the maximum speed of the club head.

In other words, the anti-centrifugal force resistance means for biasing the transfer I body toward the IJ knob side of the club in the mounting frame can utilize the repulsive force of a magnet instead of a spring as described above. FIG. 4 shows the ear 13 of the mounting frame 16 on the club head side.
(! [Permanent magnet M1 is embedded, and on the other hand, a permanent magnet M2 is also provided in the movable body 15 that is loosely fitted in the guide part 14, and the same polarity of both arsenics is made to face each other.

○1liJ showing an example in which the mobile object 15 is given biasing behavior
A locking piece 1 similar to the locking means shown in FIG. 3 is also provided on the moving body 15.
7 is of course provided.

FIGS. 5 and 6 show an embodiment in which a moving body is built into a mounting frame. A guide portion 24 consisting of a groove Il- is formed in the device frame 26, and a magnet MI+ is fixed to the end of the guide portion 24 on the club head side by an appropriate method such as adhesion or fitting. Inside the guide section 24, there is a movable body 25.
A magnet M12 is slidably inserted into the movable body 25 on the side facing the magnet M11.
It is embedded with the same polarity as I+ and opposite.

A lid 29, which prevents the movable body 25 from falling off the guide portion 24, is fixed to the mounting frame 23F. The movable body 25 is also provided with a locking piece 27 similar to the previous embodiment, and the tip (inner end) b of this locking piece 27 is in pressure contact with the bottom surface K of the guide portion 24. The amount of movement of the moving body 25 can be determined by connecting the slits 28 instead of using the magnets M1□2M12 in the sixth madder.

Inside the guide section 24, a pressure agent spring 26 may be provided between the end of the guide section 24 on the club head side and the transfer body 25 with an interposed L7.

FIG. 7 shows that the movable body 65 is fixed to the guide part 34 and the guide part 65 is fixed to the guide part 34.
4 is loosely inserted into a pair of ears 331) and 330 of the mounting frame 66, and a compression spring 66 is inserted between one ear 33C and the movable body 65.
is interposed, a locking piece 67 is provided on the ear 330, and the guide portion 64
An embodiment is shown in which the guide portion 64 can be temporarily fixed to the mounting frame 63 when the guide portion 64 moves to the left in FIG. 1 against the elasticity of the spring 66 together with the moving body.

Instead of stopping the moving body itself at its moving position, as shown in FIG. 8, if a slider 47 is used as a substitute for the moving body 45, the slider 47 has elasticity. By loosely holding the slider guide portion 43d, which has an inverted trapezoidal cross-sectional shape, between the pair of legs 4C, the slider guide portion 43d is frictionally and slidably attached to the slider guide portion 43d. An engaged portion 47bil'i consisting of a protrusion provided on the slider 47 and a moving body 45
protrudes into the movement path.

Now, when the mounting frame 46 is placed on the shaft 2 of the club a few times and the club is swung, the movable body 45 pushes the slider 47 on the guide part 44 against the elasticity of the spring 46 due to the centrifugal force. Then, the slider 47 is moved from the beginning, and at the same time as the swing of the club is completed, the slider 47 is returned to its original position by the force of the returning legs of the d-needle 46. By checking the amount of movement I (i+) of the removed slider, for example, by checking the scale S marked on the mounting frame, the maximum speed of the golfer's club head can be determined.

The slider 47 and the slider guide 4.3 are designed to prevent the slider 47 from moving independently due to centrifugal force when the club is swung.
(It is necessary to have frictional resistance in the quotient with l.

Since the slider 47 is moved 112I by the movable body, it is preferable that the above-mentioned frictional abrasion is as small as possible. For this purpose, it is desirable to reduce the weight of the slider as much as possible.

The means for biasing the movable body 45 toward the grip side of the club on the mounting frame can make full use of the repulsive force of a magnet instead of the above-mentioned spring. FIG. 11 shows the mounting frame 56
A water-immersed magnet M is embedded in the ear 55C on the head side of the club, while a transfer ST loosely fitted in the guide portion 54, /1 body 5
5 is also provided with a permanent cornerstone M2, and the same polarity of both magnets is made to face each other, thereby showing an embodiment in which a biasing behavior is given to the moving body 55. Reference numeral 53d indicates a slider guide section.

Reference numeral 57 indicates a slider similar to the slider 47 described above.

The entire moving body 55 can also be made of magnets.

FIG. 12 shows an embodiment in which the movable body is built into the mounting frame.

A guide portion 64 consisting of a groove is formed in the device frame 63, and a magnet MI+ is attached to the end of the guide portion 64 on the club head side.
is fixed by an appropriate method such as contact M or recessing. Similarly, a movable body 65 M' is movably dropped into the guide portion 64, and the magnet M1 of this movable body 65
On the side facing □, a magnet H275' is embedded with the same polarity as the magnet MIf facing each other. In this case as well, the magnet itself can be used as a moving body.

A lid 69 having a slit 68 that prevents the movable body 65 from falling off the guide portion 64 is fixed to the mounting frame 66 . A slider 67 is frictionally and slidably attached to the slit 68 . As shown in FIG. 16, this slider 67 has a pair of legs 67a that come into pressure contact with both side edges of the pickpocket and trolley 8, and an inward protrusion 67b that is positioned within the movement path of the moving body 65.

In this embodiment, instead of using the magnets M, , , M12, a compression spring 6 is inserted between the end of the guide part 64 on the club head side and the movable body 65 in the guide part 64.
6 can also be used.

The embodiment shown in FIG. 14 includes a mounting frame 71' and a moving body 75 that moves due to centrifugal force when the club is swung. When this moving body 75 moves toward the shaft side of the club due to centrifugal force, During the stroke, the moving body is pinched by a resistance system 76 that gradually strengthens the movement resistance against the moving body,
The moving body 75 that moved by overcoming the resistance of this resistance member
The speed of the club head can be determined by the amount of movement of the club head.

This measuring instrument 1 has a mounting frame 731 as shown in FIG.
The movable body 7 inserted into the movable body guide portion 74 formed in C
5. A movement resistance member 76 made of a leaf spring that pinches the movable body 75 from the side, and a lid 7 that covers the movable body guide section 74.
7. The base portion 76a of the movement resistance member 760 is fixed to the mounting frame 761/i1″, and the free end 76b is close to the side wall 74a of the movable body guide portion 74, and is held by the side wall 74a and the movement resistance member 76.

A path for the movable body 75 is formed that tapers toward the head side of the club. Therefore, when the movable body 75 moves from the grip side of the club toward the head side due to the centrifugal force when the club is swung, during the movement, the movable body 75 is moved by the movement resistance member 76. Resistance to this will gradually become stronger.

The lid 77 is provided with a s'J y) 78, into which the protrusion 75a of the moving body 75 is loosely fitted. Frame 73 f: Attached to the club When the club is swung, the movable body 75 moves against the elasticity of the movement resistance member 76 due to centrifugal force. The amount of movement of the moving body 75 is measured, for example, by a scale S marked on the edge of the door 8.

If you know this, you can know the head speed from K.

FIG. 15 shows an embodiment in which movement resistance is applied to the moving body 85 by a pair of leaf springs B6, 86 that pinch the moving body 85 from both sides thereof. Leaf spring 86°86
Each of the base portions B6a and 86a is fixed to one end of the moving body guide portion 84 of the mounting frame 86.

FIG. 16 shows an embodiment in which the movable body 95 is pinched by an arm 96 that is freely supported by the movable body guide portion 940 and the movable body guide portion 940, respectively. The arm 96 is pushed out by the spring 97 in the direction of narrowing the path of the moving body 95. The apex angle of the space formed by the moving body resistance member and the side wall of the moving body guide section is At that point, the movable body is pushed back to its original position by the component force due to the elasticity of the movable body resistance member.

The shape and elasticity of the moving object resistance member and the mass of the moving object should be determined by taking into consideration the maximum speed of the club divided by the club head when the club is swung. It is set so that it does not reach the edge of the side.

In the embodiment described above, instead of a scale, the means for determining the amount of movement of the moving body can be marked by color-coded marks indicating the moving direction π of the moving body, for example, in six sections.

This type of display means is shown in Figures 2 and 4.

In the case of the embodiments shown in FIGS. 7, 8, and 11, it is also possible to write on the peel guide section on the mounting frame.

Additionally, as shown in FIG. 11, a slider 57' may be provided on the guide portion 54 instead of the slider 57 provided on the mounting frame.Furthermore, if a scale is used as the display means. , Approximate numbers obtained by converting the amount of movement of the moving body into the head speed of the club may be attached to this scale.

FIG. 17 shows the dimensions of an embodiment in which the entire amount of movement of the moving body 105 on the guide section 104 is digitally displayed on a liquid crystal display. The moving body 105 has a built-in magnet or is made of a magnet, and the amount of movement of the moving body 105 is determined by a moving body detection unit 110 consisting of a large number of magnetic sensors arranged in the moving direction of the moving body. -1 is detected and displayed in numbers on the liquid crystal segment display section 111. The magnetic sensor uses a magnet diode switch or reed switch.
The amount of movement of the moving body is electrically calculated depending on whether the elements of the magnetic sensor array at the desired distance from the IJ knob side are activated. Reference numeral 112 indicates a small battery storage section, and 106 indicates a spring.A device for measuring the amount of movement of a moving object, which includes a 1°W motion detection section 11U1 display section 111, a calculation circuit, a reset switch, and a battery storage section 112, is fixed to the mounting frame 103F. measuring unit) 1
13F will be installed.

The technique of detecting the amount of movement of a magnetic moving object using a magnetic sensor array is conventionally known, and this embodiment is an application of such conventional technology. A description of the circuit will be omitted.

Of course, in this embodiment as well, the repulsive force of the magnet can be used in place of the spring.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the head portion of a golf club schematically showing how the speed measuring device for a club according to the present invention is used. FIG. 2 is a perspective view of a measuring instrument showing an embodiment of the present invention. FIG. 6 is a sectional view showing a moving object locking device, FIG. 4 is a side view of measurement showing another embodiment of the present invention, and FIG. 5 is a measurement side view showing still another embodiment of the present invention. FIG. 6 is an exploded perspective view of the same as above; FIG. 7 is a side view of the measuring device showing still another embodiment of the present invention; FIG. 8 is a plan view of the measuring instrument showing still another embodiment of the present invention. FIG. 9 is an enlarged sectional view taken along the line A-A in FIG. 8, FIG. 1U is a perspective view showing only the slider, and FIG. 11 is yet another embodiment of the present invention. FIG. 12 is an exploded perspective view of the measuring device showing yet another embodiment of the present invention; FIG. 16 is a perspective view showing only the slider; FIG. 14 is the main body. Fig. 15 is a plan view of a measuring instrument showing another embodiment of the present invention; Fig. 16 is an exploded perspective view of a measuring instrument showing another embodiment of the invention; FIG. 17 is a plan view of a measuring device showing still another embodiment of the present invention. FIG. 17 is a perspective view of a measuring device showing still another embodiment of the present invention. 1... Measuring device, 2... Shaft, 3.13, 2...
33.4s. 56, 63, 73, 83, 93.103... Mounting frame, 5
．． 15.25.35.45°55, 65.75.85.
95,105・ Mobile object, 4.14.24.34.44
゜54, 64.74.84.94.104...Moving object guide section -, 6, M1+ Ms+M, , M12.
26.36.46.66, 76, 86.96.106-
IL anti-thousand M. ri5 Izu 40H

Claims (1)

[Claims] A mounting frame that can be detachably attached to the shaft of the club,
On this mounting frame, there is a moving body movable in the axial direction of the shaft, a movable interior that movably supports this moving body on the mounting frame, and a centrifugal force generated when the club is swung. A golf club head speed measuring device comprising a resistance means acting on the movable body in the direction of , and a movable body display means displaying the amount of movement of the movable body moved by the centrifugal force against the resistance means. .